A marine vessel includes a hull assembly, and the hull assembly includes a deck assembly, a first battery assembly, a second battery assembly and an electric motor assembly. The deck assembly is contained within the hull assembly. The first battery assembly is located completely under the deck assembly. The second battery assembly is located completely under the deck assembly and is physically separate from the first battery assembly. The electric motor assembly receives electric power from the first battery assembly and the second battery assembly to propel the hull assembly through water during operation.

An outboard motor includes an outboard motor main body and a mount assembly to mount the outboard motor main body to a hull. The mount assembly includes a clamp bracket to be fixed to the hull, a swivel bracket to support the outboard motor main body, and a hydraulic cylinder. The swivel bracket is coupled to the clamp bracket through a tilt shaft and turnable around the tilt shaft. The hydraulic cylinder is located between the clamp bracket and the swivel bracket and is able to turn the swivel bracket around the tilt shaft with respect to the clamp bracket. The outboard motor includes a gas damper to damp an external force that acts in a telescopic direction of the hydraulic cylinder.

A bearing having at least two rubber bushings, each having a vertical axis of rotation, the rubber bushings being functionally connected in parallel.

Upper anti-vibration mounts have axial lines arranged in parallel to a longitudinal center line extending in a longitudinal direction of the outboard motor body. Lower anti-vibration mounts have axial lines concentrated on one point on the longitudinal center line extending in a longitudinal direction of the outboard motor body. Meanwhile, the axial lines are inclined at the identical angle symmetrically with respect to the longitudinal center line, so that they intersect in a V-shape in front of the support shaft as seen in a plan view of the outboard motor body.

An outboard motor includes an outboard motor main body including an engine and a propeller driven by the engine, an upper bracket to attach the outboard motor main body to a hull, and a pair of antivibration mounts. The pair of antivibration mounts are joined to the upper bracket, and sandwich and elastically support a portion of the outboard motor main body from the left and the right of the outboard motor main body. The pair of antivibration mounts are arranged side by side in the left-right direction so that a center of rolling of the outboard motor main body is located between the pair of antivibration mounts in the left-right direction, and are bilaterally asymmetrical to each other.

A watercraft includes a deck, a hull, an engine assembly disposed in the engine compartment and including an engine, a drive system powered by the engine, and at least one acoustic panel. The hull partly defines an engine compartment having an engine compartment length. The engine has an engine length that is less than half of the engine compartment length. The at least one acoustic panel is disposed in the engine compartment to partially divide the engine compartment into a plurality of sub-compartments. In a vertical plane perpendicular to a longitudinal centerplane of the watercraft and extending through the at least one acoustic panel, the at least one acoustic panel occupies part of at least a majority of the cross-sectional area of the engine compartment that is not occupied by an engine assembly cross-sectional area, which is defined by a projection of the engine assembly on the vertical plane.

A stern drive for a marine vessel, the stern drive having a drive assembly configured to generate a thrust force in water, a powerhead configured to power the drive assembly, and a mounting assembly configured to couple the drive assembly to the transom outside of the marine vessel and to suspend the powerhead on the transom inside of the marine vessel. The mounting assembly has a vibration dampening member which isolates vibrations of the drive assembly and the powerhead relative to the transom. The powerhead, and the mounting assembly are installed on the marine vessel as a single component from outside the transom.

A stern drive for a marine vessel having a transom. The stern drive has a drive assembly comprising a drive unit configured to generate a thrust force in water and a powerhead configured to power the drive unit, and a transom bracket assembly configured to support the drive unit outside of the transom and further configured to support the powerhead inside of the transom, wherein the transom bracket assembly is configured to vibrationally isolate the drive unit and powerhead relative to the transom.

The invention relates to a ship, comprising: at least one casing that delimits a cavity extending vertically across the ship's decks; at least one exhaust flue that is installed inside said casing and comprises a plurality of concentrated mass components and a plurality of components with mass distributed in length; a plurality of structures that support the plurality of said components inside the casing. Said support structures comprise: a plurality of main platforms, which define a main support base inside said cavity and is connected to walls of the casing at a ship deck by means of the interposition of main elastic suspensions; and a plurality of secondary platforms, which are directly or indirectly supported only by one of said main platforms and defines a secondary support base arranged at a different height with respect to the main support base that is defined by the corresponding main platform.

A noise-vibration-harshness (NVH) dampening cover for a stern drive is configured to propel a marine vessel in water. The NVH dampening cover comprises a plurality of panels which together enclose a powerhead suspended from a transom of the marine vessel. The plurality of panels is configured to be suspended from an inner portion of a mounting assembly, the mounting assembly having an outer portion for mounting the stern drive to the transom.